Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7072e5894f27f2…

MALICIOUS

PDF

50.7 KB Created: 2020-08-06 19:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ff50e55c87702ee2ae158b6e87ca923 SHA-1: 2fd1615281bfb3f5ac3a6a473f64ba8fbf41618f SHA-256: 7f7072e5894f27f26c267ab94091d09b6177f3ac58564c85480e15f65233064e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to government schemes and financial drafts, indicative of an advance-fee scam. It embeds numerous links, including one to a known malicious redirector, https://ttraff.cc/pify?keyword=list+of+andhra+pradesh+state+government+schemes+pdf, which likely leads to further malicious content or phishing pages. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=list+of+andhra+pradesh+state+government+schemes+pdf
    • http://files.dinakdesigns.com/uploads/1/3/1/0/131070688/diriwebe-diwobazuvixevav.pdf
    • http://files.albertaplaidgalloway.ca/uploads/1/3/1/1/131164452/kijisi_susarifutem_jixivojop_gukuwurufu.pdf
    • http://files.catcaricature.studio/uploads/1/3/0/7/130739475/8931379.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/jasimodosiwevexuver.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/14076292106.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/62055625735.pdf
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/doguruguda.pdf
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/kepavi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3815/files/41392021421.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3935/files/solivomidonatekodole.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/tatupojapiwavu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/58096755163.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/92884364380.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/pasenuxavatovekewuvizi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5578/files/dokaxorokewetomefux.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/xobonofutikibebiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/gofimuwovo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077d8.bin
de99e58b54e1eaf6f72af2c180c11e7c8f4bbbe3fb54eb71f1fafa64a32a75cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D8 5536 bytes
font_01_sfnt_off00008a96.bin
4dcadb15ed969bd06202d034db191e928dbc3ca1361efd24e4bb12a71325d3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A96 3984 bytes
font_02_sfnt_off000099f0.bin
af6b3662bab09b4a5c4d9eae82640a207e0f8a1881d0cfd3a6f59cf6dadda623		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99F0 10372 bytes

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